bernxcker



G. E. BERNfiCKER.

CUTTING DEVICE.

APPLICATION FILED SEPT. 4. I911.

1,319,689. Patented 00$. 28,1919.

6601:98 Zfiexvwc/ter inning}? 191w 116 621 V trated in-the a.ccompanyi ng drawing 13m 17 and in this recess there is positioned a knife blade 8. The knife blade is held in position due to its being located between the two levers and due to the walls of the recess and the screw 3, which passes through an opening in the knife blade. The knife blade 8 is so positioned that when the levers 1 and 2 are actuated the Cutting edge of the knife blade passes by the inner extremityl of the opening 6. The cuttin edge 9 of t e knife blade is curved or inc ined so that it Wlll produce a draw-cut, the cutting operation beginning at one rear corner of the needle and terminating at the point thereof.

The'cutting end of the member 2'" is provided with an opening 10 at the rear of the knife blade 8, through which the shavings from the needle escape. The opening 10 is so ositioned that the cutting edge 9 of the kni e blade extends across the opening and leaves a clearance 11 through which the shavings may be discharged, .as shown Hi The member 1 is provided with a slot 12 into which projects a pin 13 carried by the member 2. The pin and slot limit the relative movement of the'levers 1 and 2.

In the closed position of the members 1 and 2 the needle receivingopening 6, the knife blade 8, and the d scharge opening 10 assume the relative positions shown in Fig. 3. When it is desired to repoint. a needle, the needle is held in the .osition in dicated by the dotted lines in fig. 2, with theoblique end surface 15 of the needle parallel to the inclined surface of the guideway 7. The needle is then moved toward the opening 6 and the obliqueend surface of the needle will ride down the inclined surface of the guideway and direct the needle into the opening 6. When the needle is inserted in this manner the cut will obviously be parallelwith the oblique end surface of the needle, and therefore the needle maybe repointed by removing only a'small portion from the needle. The guideway 7' permits the needle to, be inserted in the cutter without the exercise of special care by the opera tor'to have the needle in such a position that the cut will be made parallel to the surface 15, as he will instinctivel place the'oblique end of the needle upon t e surf'ace 7 in 'po sitioning the needle. 1

After the needle is positioned the levers 1 and 2 are moved apart and the needle may then be moved to its innermost position a ainst the bottom" surface 16 of. the recess 1:, as shown in Fig. 4. A smallportion of the needle will then project. under the cutting edge of the knife. The surface 16, therefore, acts as a ga to determine the amount of the needle t at will be removed during the cutting operation. The surface 16 is so located that the needle will project but a slight distance beyond the edge ofthe .kni'fe blade so that but a very thin shaving will be removed from the needle. As the shaving is removed it is discharged throu h the opening 10. The trimming of the nee le in the above described manner obviously produces a new point at the lowermost corner of the needle.

The actuating ends of the levers 1 and 2 are preferably offset with respect to theaxis of the cutting ends so that when the cutter is held in front of the operator it will be more convenient to insert the needle in the openin 6.

The knife blade 8 lies in a plane which is substantially arallel with the plane of the levers, and, t 'erefoi'e, the device operates with a scissor-like action. The knife blade may be readily removed and resharpened or replaced by a new blade by removing the screw 3. [he levers 1 and 2 may then be separated and the knife blade may be removed from the recess 17.

The cutter is made of a minimum number of parts and is therefore inexpensive to manufacture. It is simple in construction and easy to manipulate.

The cutter will repoint the needle by removing therefroma ver thin shaving and this is rendered possible y the fact that the knife produces a draw-cut on the needle and in no way injures the fibers thereof.

It will be noted that the knife blade Starts the cut at the heel of the needle and cuts toward the point thereof. This produces a sound reproducing point of much better quality than if the out were started at the point. Furthermore the cut is in the direction of the downward inclination of the opening 6. Therefore during the cutting operation there is a tendency for the needle to be drawn farther down into the opening instead of bein pushed out of the same.

Very little e ort is necessary to cut the needle due to the fact that the opening 6 and the cutting edge of the knife are 'looafied close to the pivot 3, whereas the points at which pressure is applied to the levers l and 2 are located relativel far from the-pivot 3. A good leverage is therefore obtained and this, in combination with the draw-cut feature, renders it possible to trim the needle with a minimum amount of effort.

Although the cutter herein disclosed is intended primarily for cutting or repointilig sound reproducing needles, it maybe found useful for cutting or trimming other articles.

What I claim is A cutting device comprising a pair of pivoted levers, one of which has a portion which moves over a corresponding portion of the other lever, the inner surface of one of said lever portions bein recessed to form a shoulder, a knife bladedocated in and Occupying a portion of said recess and having an edge in engagement with said shoulder, the other lever portion having an opening for receiving an article to be cut, so that the extremity of said article may abut against the bottom surface of said recess, and said knife carrying portion being provided with an opening through which the cut portion of said article may be discharged.

In witness whereof, I have hereunto subscribed my name.

GEORGE E. BERNECKER.

copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

v Washington, D. 0. 

